linux-kernel - Re: [Xen-devel] [PATCH RFC 0/3] x86: Full support of PAT

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Message-ID: <53F51A80.4060902@zytor.com>
Date:	Wed, 20 Aug 2014 17:00:32 -0500
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jan Beulich <jbeulich@...e.com>, gnomes@...rguk.ukuu.org.uk
CC:	stefan.bader@...onical.com, toshi.kani@...com, x86@...nel.org,
	ville.syrjala@...ux.intel.com, xen-devel@...ts.xensource.com,
	Juergen Gross <JGross@...e.com>, linux-kernel@...r.kernel.org
Subject: Re: [Xen-devel] [PATCH RFC 0/3] x86: Full support of PAT

On 08/20/2014 07:21 AM, Jan Beulich wrote:
> 
> But you're aware that for the last two major releases Xen hasn't been supporting
> 32-bit CPUs at all anymore? I.e. why should we limit functionality under Xen
> based on errata on 64-bit-incapable CPUs?
> 

Because there is no fscking way we're doing this differently on 32 and
64 bits.  Quite frankly the issue is if we should support this under Xen
at all, but I think we can do it cleanly.

	-hpa


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